Articular process directional bone cutting trephine

A technology of facet facet and trepanation, which is applied in the fields of surgical sawing, medical science, surgery, etc. It can solve problems affecting surgical treatment and grinding abnormal bone, and achieve the effect of expanding the grinding range, convenient operation, and simple structure

Active Publication Date: 2015-12-30
HEBEI RUIHE MEDICAL DEVICES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a facet facet directional bone cutting ring saw to solve the problem that

Method used

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  • Articular process directional bone cutting trephine

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Embodiment Construction

[0020] like figure 1 As shown, the articular process directional osteotomy trephine provided by the present invention includes a directional sleeve, a trephine and a guide rod 7 .

[0021] The orienting sleeve includes an orienting sleeve body 1. In this embodiment, the cross-section of the orienting sleeve body 1 is an elliptical structure. In other embodiments, the cross-section of the orienting sleeve body 1 can also be a circular or 8-shaped structure. The directional casing body 1 is provided with an axially penetrating ring saw piercing hole and an axially penetrating guide rod piercing hole. Both the trephine piercing hole and the guide rod piercing hole are cylindrical holes. The hole diameter of the hole is larger than the hole diameter of the hole through which the guide rod penetrates. In this embodiment, on any cross section of the directional sleeve body 1, the center of the ring saw piercing hole and the center of the guide rod piercing hole are both on the long...

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Abstract

The invention relates to an articular process directional bone cutting trephine which structurally comprises a directional casing, a guide rod and a trephine, wherein an axially-penetrating trephine through-connection hole passage and an axially-penetrating guide rod through-connection hole passage are formed in a body of the directional casing; the lower end of the directional casing is an angled end face; a lower port of the trephine through-connection hole passage is cut into an inclined port; the guide rod is a straight-handle round rod, and axially-penetrating thread eyes are formed in the guide rod; the trephine is a cylindrical straight rod with a handle, the lower end of the cylindrical straight rod is a hollow end, and annular sawteeth are arranged on lower end edges of the cylindrical straight rod; and the length of the cylindrical straight rod is greater than that of the guide rod. By adopting the articular process directional bone cutting trephine provided by the invention, an operative approach direction can be accurately positioned, sclerotins obstructing in the operative approach direction can be accurately abraded on the premise of a safe and stable condition, and in the process of abrading the sclerotins, the abrading range can be expanded by rotating the directional casing, so that an accurate and broad implantation space is provided for a working casing, and a sufficient visual angle is provided for an endoscope.

Description

technical field [0001] The invention relates to an orthopedic medical instrument, in particular to a ring saw for articular process directional bone cutting. Background technique [0002] Lumbar intervertebral disc herniation is a common and frequently-occurring disease in spinal orthopedics. It is due to the degeneration of the intervertebral disc, the rupture of the annulus fibrosus, and the protrusion of the nucleus pulposus to the spinal canal, which stimulates and compresses nerve roots, blood vessels or spinal cord. Symptoms such as numbness. Patients often suffer from severe pain and cannot walk, which seriously affects their life. Traditional surgical treatment involves large trauma, heavy bleeding, slow postoperative recovery, and there are adverse reactions such as long-term postoperative waist discomfort and high recurrence rate. With the popularization of minimally invasive concept, intervertebral foramina mirror technology came into being. Relying on the rema...

Claims

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Application Information

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IPC IPC(8): A61B17/14
CPCA61B17/00234A61B17/14
Inventor 张为王亚朋申勇丁文元
Owner HEBEI RUIHE MEDICAL DEVICES CO LTD
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